The 20 ice mark note is the first denomination of ice marks to be issued by the Central Bank of Westarctica. As such, it is the first legal tender paper currency ever created by Westarctica. The initial release of the banknotes occurred on 27 February 2019.
The note's most impressive feature is the metallic foil snowflake that appears on the face. These are created by first spraying an adhesive through a template on each note, allowing the adhesive to dry briefly, removing the template, placing a sheet of foil on top of the remaining adhesive, and removing the excess foil with a brush.
Each note receives three ink treatments. The first is a permanent black ink edging which removes the white paper edge produced by the cut. The second is the application of UV responsive ink to the number 20 in the upper left of the obverse face. The third is an edging around the star in the note's lower right obverse.